[PATCH 03/11] x86/e820: Set IORESOURCE_SYSTEM_RAM to System RAM

[Toshi Kani]

Change e820_reserve_resources() to set IORESOURCE_SYSTEM_RAM for
E820_RESERVED_KERN and E820_RAM, which are set to "System RAM".

Also set IORESOURCE_SYSTEM_RAM to "Kernel data", "Kernel code",
and "Kernel bss", which are children nodes of System RAM.

Cc: Borislav Petkov <b...@alien8.de>
Cc: x...@kernel.org
Signed-off-by: Toshi Kani <toshi.k...@hpe.com>
---
 arch/x86/kernel/e820.c  |   18 +++++++++++++++++-
 arch/x86/kernel/setup.c |    6 +++---
 2 files changed, 20 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index 569c1e4..4c8bcbc 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -925,6 +925,22 @@ static const char *e820_type_to_string(int e820_type)
        }
 }
 
+static int e820_type_to_iomem_type(int e820_type)
+{
+       switch (e820_type) {
+       case E820_RESERVED_KERN:
+       case E820_RAM:
+               return IORESOURCE_SYSTEM_RAM;
+       case E820_ACPI:
+       case E820_NVS:
+       case E820_UNUSABLE:
+       case E820_PRAM:
+       case E820_PMEM:
+       default:
+               return IORESOURCE_MEM;
+       }
+}
+
 static bool do_mark_busy(u32 type, struct resource *res)
 {
        /* this is the legacy bios/dos rom-shadow + mmio region */
@@ -967,7 +983,7 @@ void __init e820_reserve_resources(void)
                res->start = e820.map[i].addr;
                res->end = end;
 
-               res->flags = IORESOURCE_MEM;
+               res->flags = e820_type_to_iomem_type(e820.map[i].type);
 
                /*
                 * don't register the region that could be conflicted with
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index d2bbe34..a492c30 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -152,21 +152,21 @@ static struct resource data_resource = {
        .name   = "Kernel data",
        .start  = 0,
        .end    = 0,
-       .flags  = IORESOURCE_BUSY | IORESOURCE_MEM
+       .flags  = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM
 };
 
 static struct resource code_resource = {
        .name   = "Kernel code",
        .start  = 0,
        .end    = 0,
-       .flags  = IORESOURCE_BUSY | IORESOURCE_MEM
+       .flags  = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM
 };
 
 static struct resource bss_resource = {
        .name   = "Kernel bss",
        .start  = 0,
        .end    = 0,
-       .flags  = IORESOURCE_BUSY | IORESOURCE_MEM
+       .flags  = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM
 };
 
 
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/